Soil N:P Ratio and Its Regulation Factors in Alpine Wetlands Across the Three Rivers Source Region

	Soil N:P Ratio and Its Regulation Factors in Alpine Wetlands Across the Three Rivers Source Region
	Nie, Xiuqing; Wang, Dong; Ren, Lining; Zhou, Guoying; Du, Yangong
刊名	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
	2023
卷号	23 期号:1 页码:1138
英文摘要	Although the ratio of nitrogen (N) and phosphorus (P) could significantly influence ecosystem services and functions, their characteristics and controlling factors are not well-known in the Three Rivers Source Region alpine wetlands. Using data from 32 sites, we estimated the soil N:P ratio. Ordinary least square method, partial correlation analysis, variation partitioning analysis, and structural equation modeling were used to estimate the effects of controlling factors on soil N:P ratio. The soil N:P ratio was on average 8.91 +/- 5.04. Soil characteristics, including soil total N, soil moisture, soil pH, NH4+-N, and NO3-N, played an important role in determining soil N:P ratio. The mean annual precipitation exhibited a stronger positive correlation with soil N:P ratio than the mean annual temperature. Belowground biomass had a stronger influence on soil N:P ratio than aboveground biomass. Meanwhile, the soil N:P ratio also positively correlated with soil microbial biomass. Variation partitioning analysis revealed that abiotic and biotic factors explained 83.54% of the total soil N:P ratio variation. Abiotic factors explained more of the variation in soil N:P ratio than biotic factors, 46.13% of the total variation. And, soil factor was the most significant factor in determining soil N:P ratio. Our finding presented evidence that climate factors of mean annual temperature and mean annual precipitation can affect N content in plant, then regulate microbial biomass C, and finally control soil total N and soil N:P ratio in the Three Rivers Source Region alpine wetlands, which contributed to understanding soil nutrient element dynamics in the terrestrial ecosystem.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/61716]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Nie, Xiuqing,Wang, Dong,Ren, Lining,et al. Soil N:P Ratio and Its Regulation Factors in Alpine Wetlands Across the Three Rivers Source Region[J]. JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,2023,23(1):1138.
APA	Nie, Xiuqing,Wang, Dong,Ren, Lining,Zhou, Guoying,&Du, Yangong.(2023).Soil N:P Ratio and Its Regulation Factors in Alpine Wetlands Across the Three Rivers Source Region.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,23(1),1138.
MLA	Nie, Xiuqing,et al."Soil N:P Ratio and Its Regulation Factors in Alpine Wetlands Across the Three Rivers Source Region".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 23.1(2023):1138.